Just a little update on how this turned out for me. I decided to try the same fix as Masilu. I bought the laser assembly online, and changed it myself. I quite easy operation, I'm no mechanic. To my suprise the Prestige now plays both SACD an cd's perfectly. Before the lens change it wouldn't spin at all.
I tried first a lens named Sony KHM 310 AAA which looked quite similar, however this did not work. I could also see that the circuits on the electronic board was different from the original one. The specificaton was also missing the W/M letters.
The lens that worked was this:
Sony KHM-310AAA W/M
http://www.ebay.de/itm/CD-Lasereinheit-KHM310AAA-Mechanik-KHM-310AAA-/310310338929?pt=DE_Elektronik_Computer_Audio_Hi_Fi_CD_Player&hash=item483ff00171
PS: Remember to unsolder the ESD protection blob on the laser assembly.
I tried first a lens named Sony KHM 310 AAA which looked quite similar, however this did not work. I could also see that the circuits on the electronic board was different from the original one. The specificaton was also missing the W/M letters.
The lens that worked was this:
Sony KHM-310AAA W/M
http://www.ebay.de/itm/CD-Lasereinheit-KHM310AAA-Mechanik-KHM-310AAA-/310310338929?pt=DE_Elektronik_Computer_Audio_Hi_Fi_CD_Player&hash=item483ff00171
PS: Remember to unsolder the ESD protection blob on the laser assembly.